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PostgreSQLPostgreSQLError code

39P01

trigger protocol violated

Alternative forms: trigger_protocol_violated

What does this code mean?

Code 39P01 · An issue reported by PostgreSQL.

Official explanation · Original text

trigger_protocol_violated (Class 39 — External Routine Invocation Exception)

Troubleshooting and diagnostic links

First check that the document's product, version, and environment match your situation.

Source and terms of use

PostgreSQL: Documentation: 18: Appendix A. PostgreSQL Error Codes ↗

Creator: PostgreSQL Global Development Group; The Regents of the University of California
License: PostgreSQL License
Checked on: 2026-11-12

Modifications: English prose extracted; whitespace normalized; Korean context and classified official links added. Python code examples not redistributed.

Source details · Original licenses and notices